package com.luyi.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.mysql.jdbc.TimeUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import com.netflix.ribbon.proxy.annotation.Hystrix;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @author 卢意
 * @create 2020-10-25 13:45
 */
@Service
public class PaymentService {

	//服务降级
	/**
	 * 正常访问 的方法
	 * @param id
	 * @return
	 */
	public String paymentInfo_ok(Integer id){
		return "线程池: "+Thread.currentThread().getName()+" paymentInfo_ok,Id "+id+"\t"+"O(∩_∩)O哈哈~";
	}

	/**
	 * 会报错的方法  用于模拟触发降级
	 * @param id
	 * @return
	 */

	@HystrixCommand(fallbackMethod = "paymentInfo_timeoutHandler",commandProperties = {
			@HystrixProperty(name="execution.isolation.thread.timeoutInMilliseconds",value="5000")
	})
	public String paymentInfo_timeout(Integer id){
		Integer Timeout=3;

		try {
			TimeUnit.SECONDS.sleep(Timeout);
		}catch (InterruptedException e){
			e.printStackTrace();
		}
		//int age=10/0;
		return "线程池: "+Thread.currentThread().getName()+" paymentInfo_timeout,Id "+id+"\t"+"O(∩_∩)O哈哈~  耗时"+Timeout+"秒钟";
	}

	public String paymentInfo_timeoutHandler(Integer id){
		return "线程池: "+Thread.currentThread().getName()+" paymentInfo_timeoutHandler,Id "+id+"\t"+"o(╥﹏╥)o 服务器出错了";
	}

	//服务熔断
	@HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
			@HystrixProperty(name = "circuitBreaker.enabled",value = "true"),  //是否开启断路器
			@HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "5"),   //请求次数
			@HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "5000"),  //时间范围
			@HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"), //失败率达到多少后跳闸(当前60%)
	})
	public String paymentCircuitBreaker(@PathVariable("id") Integer id){
		if (id < 0){
			throw new RuntimeException("*****id 不能负数");
		}
		String serialNumber = IdUtil.simpleUUID();

		return Thread.currentThread().getName()+"\t"+"调用成功,流水号："+serialNumber;
	}
	public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id){
		return "id 不能负数，请稍候再试,(┬＿┬)/~~     id: " +id;
	}
}
